Horseshoe.



PATENTED APR, 14, 1903.

No. 725,036. I

H. BURRUS.

HORSESHOE.

APPLICATION FILED APR. 14, 1902.

'30 MODEL.

UNITED STATES FFICE.

Pnrnn'r HENRY BURRUS, OF SPRINGFIELD, MASSACHUSETTS, ASSIGNOR OF ONE- ITALF TO THORNTON II. JOHNSONjOF SPRINGFIELD, MASSACHUSETTS.

HORSESHOEK SPECIFICATION formingpart of Letters Patent No. 725,036, dated April 14, 1903.

Application filed April 14, 1902.

IO tain peculiar means for holding the same in place are employed; and the objects of my improvement are, first, to produce a horseshoe with removable calks of great strength and durability; second, to afford means for securing said calks to the shoe or body in a practical, efficient, and satisfactory manner; third, to furnish means for this purpose which can be readily utilized without the exercise of a large amount of skill either in securing the calks in position or removing them, and,

fourth, to provide a horseshoe embodying the above-noted advantages. I attain these objects by the means illustrated in the accompanying drawings, in which Figure 1 is a plan view of my horseshoe, showing one of the heel-calks in position and part of the toe-calk broken away; Fig. 2, a cross-section on line 2 2, Fig. 1; Fig. 3, a section on line 3 3, Fig. 1; Fig. 4, a perspective 0 view of the heel calk, and Fig. 5 a perspective view of the toe-calk.

Similar letters refer to similar parts throughout the several views.

Although my shoe is designed more particularly for draft-horses, it may be used on any horse.

The shoe and parts are shown bottom side up in the drawings and the description will read to this position; but it will be under- 0 stood that in practice the top becomes the bottom, and vice versa.

The body a is provided with an opening 1) in the raised toe c and a similar though smaller opening I) in each raised heel 01, also with an internally-extending flange e on the bottom. The upper part or seat I) of each of the body-openings is wider than the lower part-tl1at is to say, the seat is flaring in straightlines, as shownand the walls of said openings are preferably rounded at the ends.

The walls on both sides of the toe c and heels Serial No. 102,694. (No model.)

cl are centrally pierced to form the horizontal holes f, each of which is preferably countersunk at its outer terminal and burred out at its inner end, as shown.

A toe-calk g is provided with a shank it, smaller than the main part of the calk, to which it is connected by a beveled neck 1', made flaring in straight lines, and said shank and neck are adapted to be received into the toe-opening b and to fit snugly therein. A holej is made in the shank h to receive a pin 70, which passes through the corresponding holef. The pin is preferably made slightly tapering and split at its smaller inner end, the two sections of which are turned over against the inside face of the toe a when the calk and pin are in place. The holes f'andj are slightly larger than the pin 70, and the hole j is a little above the hole f, or, in other words, the longitudinal centers of said holes are out of alinement, so that said pin bears against the bottom of the shank-hole and against the top of the body-hole, thus drawing the calk g firmly onto its seat b. This construction aifords a strong and positive locking connection and insures against any loosening of the calk.

A calk Z is provided for each heel d and is similar in every particular to the toe-calk g, except that it is a little smaller, being provided with a shank h and neck t and held in place in one of the openings Z) by a pin 70, which passes through the corresponding hole fand a holej in said shank.

The calks g and Z are inserted in or attached to the body a in the manner already described, and when worn out or it is desired to change them for any other reason it is only necessary to close up or break off the split ends of the pins lo and remove the latter with a suitable implement. The countersunk ends of the holes f afford an opportunity for getting at the pins for their-removal. After taking out the pins the calks can be removed and'oth ers substituted, when new pins are driven in and upset, as before. The flange efurnishes the inside of the body a, provided it projects about the inner ends of the pins.

The arrangement and construction of the parts of this shoe are such that practically no strain comes on the pins which hold the calks in place,and lateral strain,whioh is the breaking strain on a calk, is received by the straight flaring sides of the neck of the calk and the straight flaring walls of the enlarged part of the calk-opening. Consequently the joint between the calk and body is as strong, if not stronger, than any external part of the shoe.

What I claim as my invention, and desire to secure by Letters Patent, is

1. The combination, in a horseshoe, with a body having an opening therein flaring in straight lines at its lower portion, of a calk provided with a stem and a flaring neck or base portion also flaring in straight lines and adapted to be received into said opening in the shoe-body, and means to draw and retain said stern in place. a

2. The combination, in a horseshoe, with a body having one or more calk-receiving openings the outer faces of which are flaring in straight lines, and a calk provided with a shank and a flaring neck or base portion adapted to be received into and fit said openingin the shoe-body, and a pin arranged to pass through holes in said body and shank, the longitudinal centers of said holes being out of alinement.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

HENRY BURRUS.

Witnesses T. H. JOHNSON, F. A. CUTTER. 

